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Finding the Fourth Proportional to 249,817.50, 344,748.15 and 136,640.25

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Solution

The fourth proportional to 249,817.50, 344,748.15 and 136,640.25 is: 188,563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,817.50 : 344,748.15 = 136,640.25 : x
  2. Step 2: Convert to fraction form
    249,817.50/344,748.15 = 136,640.25/x
  3. Step 3: Cross multiply
    249,817.50x = 344,748.15 × 136,640.25
  4. Step 4: Simplify right side
    249,817.50x = 47,106,473,403.04
  5. Step 5: Solve for x
    x = 47,106,473,403.04/249,817.50
  6. Step 6: Final answer
    x = 188,563.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.